ByDr. Brennan Commerford, D.C.·Last reviewed: May 2026
All Ingredients
Mineral1 form

Magnesium (as Magnesium L-Threonate)

Evidence Level
Moderate Evidence

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Quick Answer

What is the best form of Magnesium (as Magnesium L-Threonate)?

We compared 1 forms of Magnesium (as Magnesium L-Threonate) in our formulary. Browse the comparison table below to find the best form for your goals.

1forms compared

All Forms of Magnesium (as Magnesium L-Threonate)

FormTierAbsorption ScoreDose RangeUnit
Magnesium L-ThreonateSpecialist
51/100Good

Absorption by Form

Good
Magnesium L-Threonate
51/100

What is Magnesium (as Magnesium L-Threonate)?

Magnesium (as Magnesium L-Threonate) is a Mineral supplement available in 1 form.

Not all forms of Magnesium (as Magnesium L-Threonate) are equal. The form you choose determines how much Magnesium (as Magnesium L-Threonate) actually reaches your tissues, and the difference between the best and worst forms can be substantial. Magnesium L-threonate is unique among magnesium forms in its ability to cross the blood-brain barrier and raise cerebrospinal fluid magnesium levels. This makes it the only form specifically targeting brain health, while other forms primarily support peripheral magnesium status.

Forms of Magnesium (as Magnesium L-Threonate) Compared

Magnesium (as Magnesium L-Threonate) (Secondary Form) has a bioavailability rating of good (S2). Typical dose range: not yet documented in our database.

What the Research Shows

Magnesium L-threonate (Magtein) is the only magnesium form clinically demonstrated to cross the blood-brain barrier and elevate brain magnesium levels. Research from MIT demonstrates significant improvements in synaptic density, learning, and memory. It is the preferred magnesium form specifically for cognitive and neurological applications.

How to Choose the Right Form

Multiple forms of Magnesium (as Magnesium L-Threonate) are available. Start by comparing form ratings — Preferred Forms reflect the strongest bioavailability evidence, and S1-rated forms deliver the most active compound per dose unit.

The appropriate form depends on your individual goals and your healthcare provider’s recommendations. Consult a qualified professional before selecting a supplement form.

Dosing & Safety

For Magnesium (as Magnesium L-Threonate), the typical dosing range is not yet documented in our database. Individual dose requirements vary based on health goals, body weight, and existing nutrient intake.

Side Effects: Specific side effect data for these forms is not yet documented in our database. In general, consult your healthcare provider regarding tolerability at higher doses.

These statements are based on structure/function research and have not been evaluated by the FDA. This information is not intended to diagnose, treat, cure, or prevent any disease. Always consult a qualified healthcare provider before starting or changing a supplement regimen.

Dosing Guidance

Dosing information not yet available for this ingredient.

Frequently Asked Questions

What is the best form of Magnesium (as Magnesium L-Threonate)?
Magnesium (as Magnesium L-Threonate) is available in several forms. Focus on products that specify the form on the label — not all forms are equally absorbed by the body.
How much Magnesium (as Magnesium L-Threonate) should I take?
Dosing for Magnesium (as Magnesium L-Threonate) varies based on the specific form, your health goals, and individual factors. Consult a qualified healthcare provider for personalized guidance.
What does Magnesium (as Magnesium L-Threonate) support?
Magnesium (as Magnesium L-Threonate) is commonly used to support Mineral. Research suggests it plays a role in several physiological pathways. As with all supplements, these statements have not been evaluated by the FDA and Magnesium (as Magnesium L-Threonate) is not intended to diagnose, treat, cure, or prevent any disease.
Is Magnesium (as Magnesium L-Threonate) safe?
Magnesium (as Magnesium L-Threonate) is generally well-tolerated when taken at research-supported doses. As with any supplement, individual responses vary. Consult a qualified healthcare provider before use, especially if you are pregnant, nursing, have a medical condition, or take medications. These statements have not been evaluated by the FDA.

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FormulaForge formulates and sells supplements containing the ingredients discussed on this page. Our formulary recommendations are based on peer-reviewed bioavailability research. All cited studies are independently verifiable.